Perhaps you should try some spelling variations:
yihan guan » yan guan
yang yang » wang yang, wang yan
tuan hua » tuan vu, yuan hui
hui yang » hui ying, du yang, h yang
3.2 long » 3.2 land
tan hua » wang hua, tan chia, tan puay
yi yang » yin yang, yi gang, yu yang
long d » long do, long du, long _

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (yihan guan)) ((tan hua) or (tuan hua)) ((yi yang) or (hui yang)) 3.2 long d ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yihan guan)) ((tan hua) OR (tuan hua)) ((yi yang) OR (hui yang)) 3.2 long d ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yihan guan)) ((tan hua) or (tuan hua)) ((yi yang) or (hui yang)) 3.2 long d ;*.